Patents by Inventor Baowen LIU

Baowen LIU has filed for patents to protect the following inventions. This listing includes patent applications that are pending as well as patents that have already been granted by the United States Patent and Trademark Office (USPTO).

  • GIS leak monitoring method based on vibration signal
    Patent number: 10422715
    Abstract: The present invention relates to a leak detection method for GIS based on vibration signals and belongs to the technical field of apparatus for detecting or reacting mechanical or electrical troubles. The method is carried out by the following steps: 1) Installing a vibration sensor on each connecting flange of each gas-tight chamber of the GIS; 2) Starting the GIS; 3) Acquiring the vibration signals of sensors when the GIS operation is stable after starting; 4) Doing de-noise processing on the collected vibration signal; 5) Doing 4-layer wavelet packet decomposition of the vibration signal after noise reduction to obtain the energy proportion of the vibration signal in each frequency band; 6) Analyzing the energy proportion of the vibration signal in each frequency band in step 5), Then alarm to notify the relevant personnel. Return to step 3) until the fault has been solved.
    Type: Grant
    Filed: February 3, 2017
    Date of Patent: September 24, 2019
    Assignees: STATE GRID JIANGSU ELECTRIC POWER COMPANY NANJING POWER SUPPLY COMPANY, STATE GRID JIANGSU ELECTRIC POWER COMPANY, HoHai Univeristy
    Inventors: Chunning Wang, Honghua Xu, Hongzhong Ma, Kai Li, Baowen Liu, Yong Li, Bingbing Chen, Yangliu Cui
  • GIS leak monitoring method based on vibration signal
    Publication number: 20170234758
    Abstract: The present invention relates to a leak detection method for GIS based on vibration signals and belongs to the technical field of apparatus for detecting or reacting mechanical or electrical troubles. The method is carried out by the following steps: 1) Installing a vibration sensor on each connecting flange of each gas-tight chamber of the GIS; 2) Starting the GIS; 3) Acquiring the vibration signals of sensors when the GIS operation is stable after starting; 4) Doing de-noise processing on the collected vibration signal; 5) Doing 4-layer wavelet packet decomposition of the vibration signal after noise reduction to obtain the energy proportion of the vibration signal in each frequency band; 6) Analyzing the energy proportion of the vibration signal in each frequency band in step 5), Then alarm to notify the relevant personnel. Return to step 3) until the fault has been solved.
    Type: Application
    Filed: February 3, 2017
    Publication date: August 17, 2017
    Inventors: Chunning WANG, Honghua XU, Hongzhong MA, Kai LI, Baowen LIU, Yong LI, Bingbing CHEN, Yangliu CUI